Emergency-brake for cars.



PATBNTED AUG. 28, 190e.

W. E. PISTER.

EMERGENCY BRAKE POR C'ARS.

APPLIATION FILED FEB. 12. 1906.

PATBN'IBD AUG. z8, 1906.

. F. PISTBR.

BNCY BRAKE FOR CARS.

APPLICATION FILED F3112. Inca.

EMERG 2 SHEETS-SHEET 2 Wicsaiil'NiflED STATES PATENT OFFICE.

EMERGENCY-BRAKE FOR CARS.

Specification of Let-ters Patent.

Patented Aug. 28, .1908.

Application flied February I2. 1906. Serial No. 300.679.

Bo it known that i. irri-:n l". FISTER, a citizen oi ilnihil Si vri-S,rvs-illing in Henlburg, ihrlos nonni); irnnsjflvimiu; have nvontedrorinin lmnrormnvnte in Elin-,money- Brnkos for 'iE-1ro, of which thefollowing is a Spzi'iiiintioir My inrmil ion relatos to that class ofeinorgnnoylimlo-s which nrt, upon the roadway insiflo of filoironic-mils upon which the Car oi',

olhir whirlo is adopter! to more. the objiot oiV my invi'niion lia-ing:to proviilr n quloknoting brok/ of this rims und tio so constructthehrnkc that ity van be pnt mbo notion from eiilwr or both of theplotforr. s of the cur and will he somi-ontonmtic in itsnotion, thebraking rlevires :it the rear und of the oar boing rendered fullyoperativ( 'by' the weight :1nd momentum of the ver. Ail of the. hmkingdeviens hang free when noi, in use, but are adjusted to operativoposition by n partial turn of zi wiwi-l or slmit within convenient roachol' the morornmn or oonilurtor.

in thrsicrompmiying drawings, Figure 1 is side vlovnlion, pnrllyi nonction :mil in iii Lied lines, ol'soliriont of n trolloy-onr tioillustri-n theroon in full lines hmking: meclmnis'm constructori inaccordance with mj' invention. FigA 2 is un ond vivwof the sinne, partlyin soction; uml Fig. 3 is an enlar'fod .View illustrating one of tliiAfoaturcs oftlie braking nir- 1ianisvn.

(ln tho undrr side of the cnr, at. @sich side oi' thv Faune, is :ilongitudinal hmm l, whirh may forni part of the ordinary structure ol'the uw or may he u. special hvnln added to sin-,h sminuire, nspreferred. xionding longltinlimilly from one end of tho cnr to tuinother, pliinllelith ono of these hwnns l, is u slmlt 2, whiish ismounted in snitnlllv lnnrings 3 nt the iipposilc exnlsof the cnr und isgeared at nach end of Vthe wir by moons of spur--whvols 4 und 5 to nshor!` shall mounted in IQnitnhle hearings upon [im correspondingplatform of rho wir, snidh'lmft lnivinrr mounted lhirion, o ne li iwfron (lo turn, mi oporntfing-li-vir 6, )reforsihly proviiiiil with n.lookinirg-hollY 7, whereby ilI muy iwminimi to ongugc with Llw spurwhovl5 when the lmniil(` of the lover is grnspvrl. in' the nml-olmnn.-tlnmproviding for n pmlinl roh-:lion of Lho spnr-whool 5 by moons of liloloror i whim sin-,ir rotinliiox luconns mwrnsnry" n noLoln-il vomi) m'Hvgmonii l" sowing lo rvioin rho lm'vr in position ofi-or mljnslinionlf.

' sniii fleure, tho lower portion of each brak "57,

Projecting from lzhe face of the spur-Wheel 5 is a stirrnp 9, whichrovides for direct o eration oi' Seid spur-w lecl by the foot to t, eV,i oxlvnt of a partial turn, this beingthe pref- 69 emble method ofimparting the initial mot` tion to the wheel, the lever 6 being used asan emergency device for continuing the movement of the. whoel if thuinitial movement iml iarted thereto hy the -stirrnp should prove tpf6`5lie insufiiciont for the purpose of app ying the brakes. VVhero extendedmovement is erxnitt-ed, the lever 6 nmy, if desired, be app ied(liront-ly to the shaft 2. The said shafls-2-hai 4 near auch emi u crank10, wine? is connected.' 7o by n link ll to n fmnk l2 on al ooksha-ft13,the latter vxleniiing tmnsyersely across the A car and being reo lo turnin suitable dependinv bearings on the Car-ilmc.` igidly secured to therook-shaft i3 isa 75 paix' of Swingin ,brake-.blocks 14 disposed )ustinside of l, le' track-rails. oxmnlly-L- that is to say, v'ufhen the caris running ,fr-- the parte are in the position shown by full lines inFigs. 1 and 2, the brake-blocks l4foc- 8o cupying the position thereshown und free' from contactF either with the cnr-frams'f or road-heil..By impnrtinggn quick tillrnf to thv simil; 2, however, the cranks-lOnd-plZg' will bosliifbccl so as to move the crunk-bloeik'ss 14 ronithe positions shown by full liife'si'n i biol-.k lheim* forced lirmlyinto contact' tho rond -iod Thai. face of each brake- 9o blovk ,I4 whichcontacts with the mnd-bed' muy bi. pointed or may possess such zgdegreoof ecoontricitiy in ros vect to the axis of rotntion ol the block, asshown :it- 15,for'inst.nce, Limi when the blocks at therearothc curare95 forced into connu-L with tlv` road-bed the en- ;:ngiinent of tholutter with @he blocks 'will zond to continue the movement of the Sameuntil such inmjomontisarrcsteil hynontact of, l

.n 'portion 16 ol' mii-h block with u correspond-n ugo ing lwfrni l, hywhirh timeA the other portion n i i l5 ol'I thv hlork will lw hillydcpressodundyf' will, il' ilvsiroiTogvrl n lifting oliect upolntheg'brains l, thi-rohr hringing ihoweighipf our and iis loiul upon thebrillio n roar oi the cur and nfloctingftheiQ pin-go of any furtherforward inogeniigii QQ' i rar, thehrakvfhlocks M, the realoffltg ab iing Lliorvfore sonllimutomatiu inlil'ei The brake-blocks nt, the forwardom', although set to swing: riavere', those at the roar cnil, will uidin th= m efi'eet.since they will bear upon the rond-bed with o. forceproportionate to the power exerted u on the spurwhccl 5 and to the pnllexerte( by the rear brake-shaft 13 upon the shaft 2.

1n order to insurethe easy movement of the brake-blocks through themedium of the double-crank mechanism employed for opervatingthc same,each end of the link 11 may birqvided with antifriction-rollers 17 abovei a belo'w the crank, shown in Fig. 3, and both of the cranks 10 and 12may be clungatcd, so as to provide for the movements of the links 1l ducto the swing of' said cranks.

l Glenn 1. An einer' ency car-brake consisting of a swinging bre e-blockmounted below the body ofthe car and having two eccentric portions, ofwhich one is capable, when the' dcvice is in action, of contacting withthe road hed and the other with the beam on the carrame.

y 2. An emer ency car-brake consisting of a yswinging bra e-biockmounted below'the -body of the car, and having, below, an eccentric facefor contact with the road-bed and above, an eccentric locking-face forContact. with a beam on the csr-frame.

3. The combination of Swingin f brakeblocks at the front and rear endsci the ear, with means for swinging those at one end of the cer intooperative position by movement of reverse direction from that impartedto those at the opposite end ofthe car the parts being so arranged thatthe ap lication of the brake-blocks at one end of tllie car tends toapply those at the other end thereof.

4. 'The combination of Swingin brakeblooks at the front and rear ends othe car, with means for swinging the same into contact with the roadway,said blocks being constructed each with two eccentric portions sodisposed that contact of one portion with the roadway will cause theother portion to engage the car and will tend to continue the movement'of the blocks.

5. The combination of swinging brakeblocks, a transverse shaftsupporting said blocks Bo as to permit of their being turned intoengagement with thc man ay :n.l with 5o the cur, a longitudinal shafthaving operative connection with said transverse shaft, and means for immrting a partial turn to said longitudinal s nilt.

1 Y. G. ihe combination of swmging brake- 55 blocks, ccrank-shaftcarrying the same, e. longitudinal shaft also having a crank,.and a. link .connectin f sind crank with the crank of the brake-bloc s.

T. 'lhe combination of swinging brake- 6o blocks, a c ran k-shaftcerryinrf the same, a lon git udinal shaft having a cran ,and alinkconnei-ting said crunk with the crank of the broke-blocks, both cranksbeing elongated.

8. The combinationof swinging brake-.65

blocks, a crank-shaft carrying the same, a. lon gitudinal shaft having acrank, and s. link connecting said crank with the crank-shaft of thebrakeblocks, said link having rollers for` engaging the cranks. A 7o 9.The combination of a longitudinal brakeoperziting shaft on the underside'of the car, and gearing for operating the same, one of the wheelsof said gearing having a project ing stirrup for bein acte partial turnby the oot.

10. T he combination of a longitudinal brakeopcrating shaft on the underside of the ear, and glearing for o creating the same, one of the wprojecting stirrup for bein acted upon by the foot and a lever for hanaction. Y

11. The combination of' .a longitudinal brake-operating shaft on theunder side of the car, and rcaring for o eratingthe same,4 85

one of the w reels of sai gearing having n. projecting stirrup for beingacted upon by the foot, and a lever for hand action, said lever beingloosely mounted on the shaft of the gear-wheel and bein whereby it canbe loc ed to said wheel.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. l

WALTER F.FISTER.

Witnesses:

WILLIAM H. GIBBoNs, Hmm' J. Haskins.

upon and given a 75 eels of sai gearing having a 8o provided with abolt,9o

